Multiple core venting machine



Sept. 5, 1933.

A. W. CONNOR MULTIPLE CORE VENTING MACHINE Filed May 2, 1952mlllllllllllllllllllll,

Patented Sept. 5, 1933 j I i titre stares sen:

MULTIPLE CORE VENTING MACHINE Anthony Wayne Connor, Tampa, Fla.

Application May 2, 1932. Serial No. 608,741

7 Claims. (Cl. 2239)' The present invention has for its object to probya rod 9 to a foot lever 10, normally held lifted vide a simple,inexpensive, accurate, and efficient by-a spring 11. v mechanism forforming vents in cores used in To the lower side of the s d b 5 is ilgcasting. one element 12 of a clamp, as y screws a 5 In the ordinaryprocedure, cores have been prosecond clamp element 14 being adjustablysecured 60 vided with vents by thrusting a venting wire by F the element12 as by c 5-, The m hand into the finished core, and it frequentlyhapfaces of the 61611161113312 and 14 are provided pens that the wirethus used pierces the side of With Spaced gYOQVGS 16 each ip t fi t0receive the core or is not accurately placed to form the 6 e d 8v Ven gW e 7- i h 8 c ews 1O vent in the right location within thecore, with li t 11 of i"; venting Wires nay 2 -1 2 resultant defects in the casting.111 0 a 611 of e grooves a hi me The apparatus herein illustrated anddescribed to iv y i d p i Wir f diff r nt comprises a movably mountedclamping member lengths Will be provided f m Which to (3110058 Withinwhich a plurality of venting Wires of those suited to reach to thedesired depth in the 15 proper length are held accurately spaced toenter c r wh n hedin bar i m ved d wnward a plurality of cores at theprecise point desired in 111m Contact wl'fih the of the Core 3191 h Ifeach core. The cores are held within the core box A COTE 13 is Shown in1 W e a in which they are formed; the box is positioned removed to Showthe Seven Spaces 9 Within W ic by a gage or gages; and the movement ofthe ent, cores 2*) are ,iormed before the bOX placed 20 ing wires isguided and limited so that the ventagamst the adJustab 1e gages 21 andat 9 slde ing holes are made uniform in size, depth, and one drespectlvely- The f m wlres are location illustrated 1n Fig. 1 as spacedw1th1n the clamp TWO preferred embodiments of the invention 3211i???33$? ii trfe i fiicig 12 51 9553335510??? are illustrated in theaccompanying drawing Each wire is shown as having a conical washer 3;.

g fg fi t speglficatlolt p t i gz 23 adapted to form an enlargement atthe en- 3 1 e if g 2 5 trance to the vent in the core, to act when the:93 gr 2 i 0 9 0 M cores are inverted as a means for preventing sand S 18 a1 a 6 emen, t i f from filling the vent. Cores are frequently stoodmofhficatwn to sult dlfferent conqltlpns t 011 on end and when the'ventis small, particles of 105mg of advimtaiges thfls mvemlon or sand maywedge in the entrance, this necessitatdeparting from its essentialprinciples. mg careful cleaning out by hand In g Flgure 1 5 elevatlqn ofThe core 20 at the left end of the box in Fig. 1 macltme m Whlch the tmWlres are i is shown in section formed with a venting openm Vertlcalmovement by t ing extending to a point a little distance above 90,; byfoot lever a core box t? 5 n m p051 the lower end of the core. In someinstances, it agamst Side and;end gage? W slfie t Y may be desired tohave the vent extend coma one W bemg 1n fi t 2 t pletely through thecore, and for this purpose, slde l w 9 of 3 1S a a plate 24 having acentral slot 25 which may plan of 4 fragmentary front be filled withcork or rubber 26, is secured to p, f i g g g f f g fi sfig g ggz: g ggfig the base beneath the venting wires so that when s S m the wires arelonger than the cores, the cork or game; F-

1S slde e levatl on of the zflodlfica rubber will allow the ends of thewires to enter F Shown m F1? 4; 1s a plan Y 9 without injury whileholding back the sand. The t Sca1e 0f the clamp the Venting P core boxmay act as a limiting means to deter- Fig. 7 1s a side elevation of theclamp of Fig. 6; mine the downward movement f the cross bar and 8 15 a pa View of a slotted plate Whieh 5 and the wires, or other well knownmeans may m y be used b n h the core b xbe used. Since all the wiresmove in unison, the Upon a table 1 l5 bolted OI otherwise 86-- depth ofthe enting pening will be the ame 50 cured a guiding framework having abase 2 and wh n wires of equal length are used. slotted verticalstandards 3 which may be con- In the modification shown in Figs. 4 and5, nected at the p y a 58 ba 4 acting as a stop a hand lever 27 upon arockshaft 28 acts through to limit the upward movement of the slidingbar a segmental gear 29 meshing with a rack 30 5. The bar5 is shown ashaving at each end a secured to the sliding bar 5 to raise or lower 55pivot screw 6 for a link 7, each link at its lower the bar 5 with itsVenting wires. It will be end being pivoted to a yoke 8 which isconnected evident that other hand-operated means may be used and motordrive when desired in ways needing no illustration.

It will be seen that the mechanism illustrated provides a simple andreadily operated group of agencies for moving a spaced plurality ofventing tools through a definite path to a predetermined limit, and forholding one or more cores in a definite position or positions to receiveeach a venting tool simultaneously.

In the appended claims, it is intended to-claim the invention broadlywithin the full scope and meaning of the terms employed and not to limitthe invention to the precise apparatus shown.

I claim:

l. A multiple core venting machine comprising a movable bar, a clampsecured: to the bar and adapted to receive a plurality of venting toolsand to hold them in spaced position, means for guiding the movement ofthe bar, andimeans; within the path of movement of the bar for holding aplurality of cores in spaced position to: receive the venting tools saidholding means forming a' stop to liinit' the movement of the bar.

2. A multiplecore venting machine comprising' amovab'l'e'clarnphaving aplurality of spaced grooves adapted to receive venting tools to holdthem selectively in definite spaced positions, means for guiding themovement of the clamp, and means within the path of movement of theclamp forhol'ding a plurality of cores in. spaced positions to receivethe venting tool's, said holding means limiting the movement of theclamp and the spacing of the tools bearing a definite relation to thespacing: of the cores.

3. In a core venting machine, means for moving; venting, tools. in apredetermined path,v means for holding cores within the path of movementof the venting tool's and' a support to receive the cores having aportion formed of an elastic material capable of penetration by thetools.

l. In a core venting machine, a venting tool having secured at its basemeans of greater diameter than the tool for entering the endof a core toform an enlargement of one end of the venting passage.

5. In a core venting machine, a clamp for holding a venting wire, aconical washer mounted upon the wire adjacent to the clamp, a core boxwithin the path of movement of the clamp having a space to hold a coreand acting as a stop for the clamp, and means for moving the clamp intocontact with the core box, whereby to form an enlargement of the vent inthe core at the. end adjacent to the clamp.

6. A means for venting cores comprising, a core box for holdingaplurality of cores, a clamp mountedcfor movement toward and from thecore box, the core box being within the range of movement of theclampand acting as a stop to limit the movement of the clamp, and a pluralityof wires of uniform length less than that of the core secured within theclamp, whereby the depth of penetration of the cores by the wires may bepredetermined.

'7'. A multiple core venting machine comprising a sliding bar, guidewaysfor the bar, means for moving the bar in its guideways, a clamp carriedby the bar, venting tools carried by the clamp, a core box within thepath of movement of the bar adapted to hold a plurality of cores inposition to receive the venting tools and acting as a stop to limit themovement of the bar, and means for gaging the position of the core boxin relation tothe path of movement of the tools.

ANTHONY WAYNE CONNOR.

